In-line type electron gun enabling easy centering between main electrode and auxiliary electrode
US5208507A · kind A · utility
34Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Nov 27, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/485
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A screen electrode of an electron gun is by uniting main electrode with an auxiliary electrode. The main electrode has three circular beam passing holes and a pair of guide holes for insertion in arbors of a jig disposed symmetrically around a center beam passing hole thereof. The auxiliary electrode has three elongated beam passing holes and a pair of guide slots for insertion in the arbors of the jig formed in a top edge and a bottom edge of the auxiliary electrode and coaxially positioned with the guide holes, thereby enabling easy centering of the main and auxiliary electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.